230-0021

Access Machine Parameters

Navigate to MOD function → Machine Parameters → CfgAxis group to view current axis hardware configuration.

Document current settings before making changes for easy rollback if needed.

Verify Hardware Type Setting

Check CfgAxis-axisHw parameter value against actual servo drive model and encoder type installed on the problematic axis.

Incorrect hardware type settings can cause permanent damage to servo drives.

Correct Configuration

Set CfgAxis-axisHw to match actual hardware: 0=no axis, 1=analog servo, 2=digital servo, 3=stepper motor, 4=spindle drive.

Consult machine documentation or servo drive nameplate for exact hardware specifications.

Restart Control

Perform complete TNC restart to activate new configuration and attempt axis activation.

Ensure all axes are in safe position before restart.

Check PLC Status

Access PLC → Status to verify axis enable signals are active and no safety interlocks are preventing axis activation.

Look for M4xx auxiliary functions that may control axis enables.

Verify Enable Logic Configuration

Check CfgAxis-axisHw enable bit settings and ensure they match the actual enable signal logic (active high/low).

Incorrect enable logic can cause unexpected axis movements.

Test Enable Signals

Use TNC diagnostic functions to manually toggle axis enable signals and verify proper hardware response.

Monitor servo drive LED indicators during enable signal testing.

Update Configuration

Correct enable signal configuration in CfgAxis-axisHw and save parameters to non-volatile memory.

Always backup machine parameters before making configuration changes.

Check Communication Status

Navigate to Service → TNCdiag → Drive Diagnosis to verify communication status with all servo drives.

Green status indicates good communication, red indicates communication failure.

Inspect Physical Connections

Verify all servo drive communication cables (typically CAN bus or proprietary) are securely connected and undamaged.

Power down system before checking cable connections to prevent electrical hazards.

Reset Communication

Perform communication reset through Service → TNCdiag → Reset Drive Communication and monitor for restored connection.

Communication errors often resolve after power cycling both TNC and servo drives.

Verify Drive Parameters

Check servo drive internal parameters match TNC configuration, particularly communication address and baud rate settings.

Incorrect drive parameters can cause permanent communication loss.

Check Safety Status

Access Service → Safety → Status to identify active safety interlocks preventing axis activation.

Safety status display shows both hardware and software safety conditions.

Clear Safety Conditions

Address any active emergency stops, door interlocks, or safety fence conditions that may be blocking axis enables.

Never bypass safety systems - resolve the underlying safety condition.

Reset Safety System

Perform proper safety system reset sequence according to machine safety documentation after clearing all safety conditions.

Some safety systems require specific reset sequence timing to properly clear interlocks.

Backup Current Parameters

Create complete backup of current machine parameters through MOD → Data Management → Export Parameters.

Always backup before attempting parameter restoration to prevent total configuration loss.

Restore Default Configuration

Load known good axis configuration from backup or restore factory defaults for CfgAxis group parameters.

Keep multiple dated backups of working configurations for quick restoration.

Reconfigure Axis Parameters

Manually reconfigure CfgAxis-axisHw and related parameters according to machine documentation and hardware specifications.

Incorrect axis parameters can cause mechanical damage during first movement.

Verify Configuration Integrity

Use TNC parameter check functions to verify configuration consistency before attempting axis activation.

Perform low-speed test movements after configuration restoration to verify proper operation.